Odd One Out (SSC CHSL 2023 Tier – 1) (Part

Total Questions: 50

21. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [SSC CHSL 04/08/2023 (2nd Shift)]

(1) 39 - 75
(2) 43 - 82
(3) 55 - 107
(4) 64 - 125

(a) 3
(b) 2
(c) 4
(d) 1

Correct Answer: (b) 2
Note:

Logic:
(1st number × 2) - 3 = 2nd number
39 - 75 → (39 × 2 - 3 = 78 - 3 = 75)
55 - 107 → (55 × 2 - 3 = 110 - 3 = 107)

64 : 125 → (64 × 2) - 3 = 128 - 3 = 125
But, 43 : 82 → (43 × 2) - 3 = 86 - 3 = 83 (Not 82)

22. Based on the alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which of the following does NOT belong to that group [SSC CHSL 04/08/2023 (2nd Shift)]

(a) JLN
(b) MOR
(c) CEH
(d) VXA

Correct Answer: (a) JLN
Note:

23. Based on the alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which of the following does NOT belong to that group? [SSC CHSL 04/08/2023 (4th Shift)]

(a) DEH
(b) ABD
(c) OPS
(d) HIL

Correct Answer: (b) ABD
Note:

24. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [SSC CHSL 04/08/2023 (4th Shift)]

NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.

(a) 9 - 44 - 218
(b) 6 - 31 - 156
(c) 13 - 66 - 331
(d) 16 - 81 - 406

Correct Answer: (a) 9 - 44 - 218
Note:

Logic:
(1st number × 5) + 1 = 2nd number
(2nd number × 5) + 1 = 3rd number

6 - 31 - 156 : (6 × 5) + 1 = 31, (31 × 5) + 1 = 156
13 - 66 - 331 : (13 × 5) + 1 = 66, (66 × 5) + 1 = 331
16 - 81 - 406 : (16 × 5) + 1 = 81, (81 × 5) + 1 = 406
9 - 44 - 218 : (9 × 5) + 1 = 46, (46 × 5) + 1 = 221 (Not 218)

25. Based on the alphabetical order, three of the following four are alike in a certain way and thus form a group. Which is the one that does not belong to that group? [SSC CHSL 07/08/2023 (1st Shift)]

(a) HJN
(b) LOQ
(c) PSU
(d) MPR

Correct Answer: (a) HJN
Note:

26. Select the option in which the numbers do not share the same relationship as that shared pairs of numbers. [SSC CHSL 07/08/2023 (1st Shift)]

(Note: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

11 : 35 and 13 : 41

(a) 19 : 59
(b) 23 : 71
(c) 32 : 95
(d) 16 : 50

Correct Answer: (c) 32 : 95
Note:

Logic:
(1st number × 3) + 2 = 2nd number

11 : 35 → (11 × 3) + 2 = 33 + 2 = 35
13 : 41 → (13 × 3) + 2 = 39 + 2 = 41
32 : 98 → (32 × 3) + 2 = 96 + 2 = 98 (Not 95)

27. Three of the following four are alike in a certain way and thus form a group. Which is one that does not belong to that group? [SSC CHSL 07/08/2023 (1st Shift)]

(Note: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

(a) 13 - 144
(b) 9 - 63
(c) 8 - 48
(d) 11 - 99

Correct Answer: (a) 13 - 144
Note:

Logic:
(1st number) × (1st number - 2) = 2nd number

9 : 63 → (9) × (9 - 2) = (9) × (7) = 63
8 : 48 → (8) × (8 - 2) = (8) × (6) = 48
11 : 99 → (11) × (11 - 2) = (11) × (9) = 99
But, 13 : 144 → (13) × (13 - 2) = (13) × (11) = 143 (Not 144)

28. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [SSC CHSL 07/08/2023 (3rd Shift)]

(a) 444 : 339
(b) 189 : 82
(c) 401 : 294
(d) 500 : 393

Correct Answer: (a) 444 : 339
Note:

Logic:
(1st number - 2nd number) = 107

189 : 82 → (189 - 82) = 107
401 : 294 → (401 - 294) = 107
339 : 232 → (500 - 393) = 107
444 : 339 → (444 - 339) = 105 (Not 107)

29. Three of the following number pairs are alike in some manner and one is different. Select the odd number pair. [SSC CHSL 07/08/2023 (3rd Shift)]

(NOTE: The second number in the given number pairs is formed by performing a certain operation on the first number. The same operation is followed in all the number pairs except one. Find that odd number pair.)

(a) 72 : 215
(b) 99 : 296
(c) 86 : 252
(d) 115 : 344

Correct Answer: (c) 86 : 252
Note:

Logic:
(1st number × 3) - 1 = 2nd number

72 : 215 → (72 × 3) - 1 = 216 - 1 = 215
99 : 296 → (99 × 3) - 1 = 297 - 1 = 296
115 : 344 → (115 × 3) - 1 = 345 - 1 = 344
But, 86 : 252 → (86 × 3) - 1 = 258 - 1 = 257 (Not 252)

30. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [SSC CHSL 07/08/2023 (3rd Shift)]

(a) RTX
(b) LNQ
(c) ACG
(d) IKO

Correct Answer: (b) LNQ
Note:

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Odd One Out (SSC CHSL 2023 Tier – 1) (Part – I)